HtmlDecode

String functions HtmlDecode

The HtmlDecode function decodes HTML-encoded strings back to their original form.

syntax

HtmlDecode(strings: E->String) -> E->String

definition

Converts HTML-encoded strings back to their original format by replacing HTML entity references with the corresponding characters:

Entity	Character
&lt;	<
&gt;	>
&amp;	&
&quot;	"
&#39;	'
&nbsp;	(space)

Also decodes numeric character references like < and <.

arguments

argument	description	type
strings	HTML-encoded strings to decode	E->String

performance

Time complexity: O(n × L) where n is the number of strings and L is the average string length.

Decoded strings are typically slightly shorter than input strings.

example

unit<uint32> HtmlContent: nrofrows = 3;
attribute<String> encoded (HtmlContent) := union_data(HtmlContent,
    'Hello &lt;world&gt;',
    'A &amp; B',
    'Quote: &quot;test&quot;'
);

attribute<String> decoded (HtmlContent) := HtmlDecode(encoded);
// decoded = {'Hello <world>', 'A & B', 'Quote: "test"'}

use cases

• Processing data extracted from HTML sources
• Converting HTML content to plain text
• Cleaning up HTML entity artifacts in imported data

see also

• HtmlEncode - reverse operation
• UrlDecode - for URL parameters
• String functions

since version

7.0